package com.chtw.intercept;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.HandlerInterceptor;

public class CheckLogin implements HandlerInterceptor{

	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		HttpSession session = request.getSession();
		if(session.getAttribute("currentUser")!=null) {
			return true;
		}else {
			request.setAttribute("message", "请先登录");
			request.getRequestDispatcher("index.do").forward(request, response);
			return false;
		}
	}

}
